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Finding the Fourth Proportional to 660,077,481.60, 990,116,222.40 and 199,955,863.80

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Solution

The fourth proportional to 660,077,481.60, 990,116,222.40 and 199,955,863.80 is: 299,933,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,077,481.60 : 990,116,222.40 = 199,955,863.80 : x
  2. Step 2: Convert to fraction form
    660,077,481.60/990,116,222.40 = 199,955,863.80/x
  3. Step 3: Cross multiply
    660,077,481.60x = 990,116,222.40 × 199,955,863.80
  4. Step 4: Simplify right side
    660,077,481.60x = 197,979,544,512,384,928
  5. Step 5: Solve for x
    x = 197,979,544,512,384,928/660,077,481.60
  6. Step 6: Final answer
    x = 299,933,795.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.